I watched Pearl Harbor many years after it got a savaging and I thought it was fucking hilarious, and don't understand why it's not elevated alongside Michael Bay's other so-ludicrous-they're-great efforts like The Rock or Con Air, and I think the same thing happened when I watched IT (2017), as I found this film indistinguishable from parody and couldn't take it seriously. Great cast and it's unquestionably well-made, but Pennywise is shite, none of it is scary, and there's nothing I haven't seen before.
I did actually try reading the book many years ago and thought it would have made a great kids' adventure movie - apart from one scene near the end of part one where the kids try to rebuild their bond which sounds like it would be right at home in a children's movie but trust me it would not - and I think that's what they went for here, as I think younger viewers would get the most out of this, as it's all very meme-friendly and full of camp.
A rubbish horror, a passable comedy, or a decent adventure romp - take your pick, really.